diff --git a/.travis.yml b/.travis.yml
index 211acae..b7bcc3b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,6 @@
 language: node_js
 node_js:
-  - "6.14.2"
+  - "6.14.4"
+  - "8.16.0"
+  - "10.15.3"
+  - "12.2.0"
diff --git a/objectid.js b/objectid.js
index 4307a2d..c05a2af 100644
--- a/objectid.js
+++ b/objectid.js
@@ -211,12 +211,14 @@ function buffer(str) {
   return out;
 }
 
+var inspect = (Symbol && Symbol.for('nodejs.util.inspect.custom')) || 'inspect';
+
 /**
  * Converts to a string representation of this Id.
  *
  * @return {String} return the 24 byte hex string representation.
  * @api private
  */
-ObjectID.prototype.inspect = function() { return "ObjectID("+this+")" };
+ObjectID.prototype[inspect] = function() { return "ObjectID("+this+")" };
 ObjectID.prototype.toJSON = ObjectID.prototype.toHexString;
 ObjectID.prototype.toString = ObjectID.prototype.toHexString;
diff --git a/package.json b/package.json
index 72eec60..c7658ef 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "bson-objectid",
-  "version": "1.2.4",
+  "version": "1.2.5",
   "description": "Construct ObjectIDs without the mongodb driver or bson module",
   "main": "objectid.js",
   "typings": "./objectid.d.ts",